Texas Instruments 2000 series, Reference Manual

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February 2002 Product Description
15
Table 1 lists the pin functions for connector J1. The connector type is 16 pin, 2 row
with 2.54 mm pin spacing.
Table 1: J1 Pin Functions
Signal Direction Description
1 GND IN Logic ground
2 TXCT- IN Transmitter control input for activation of transmitter
(active low, internal pull-up resistor)
3 VSL IN Supply voltage for logic and receiver
4 RXDT OUT Logic level compatible receiver data signal output
5 RXSA IN/OUT Receiver signal strength adjust for RXSS- threshold level
6 RXCK OUT Logic level compatible receiver clock output
7 GNDP IN Transmitter power stage ground
8 No connection
9 GNDP IN Transmitter power stage ground
10 RSTP OUT Analog receiver signal strength test pin
11 VSP IN Supply voltage for transmitter power stage
12 CPS_OUT OUT Carrier Phase Synchronization oscillator signal output
13 VSP IN Supply voltage for transmitter power stage
14 RXSS- OUT Receiver signal strength output (active low)
15 No connection
16 CPS_IN IN Carrier Phase Synchronization oscillator signal input
CAUTION:
The transmitter ground pins GNDP and logic ground pin
GND must be connected together externally. The RA-RFM
may be otherwise permanently damaged.
Table 2 lists the pin functions for the ATI connector J2: The connector type is a
6 pin, 2 row connector with 2.54 mm pin spacing.
Table 2: J2 Pin Functions
Pin# Signal Direction Description
1 TXCT-R IN Transmitter control signal via resistor (active low)
2 GND OUT Logic ground
3 VD OUT Internal regulated logic supply voltage output
4 F_OSC-R IN/OUT Pulse width modulated transmitter oscillator signal via resistor
5 RXSS- OUT Receiver signal strength output (active low)
6 F_ANT OUT Antenna resonance frequency output signal (open collector)